Automatic spring for doors and gates.



F. PEZDlR.

AUTOMATIC SPRING FOR DOORS AND GATES.

APPucATloN m2o Juni 1. i911.

,258,45 l Patented Mal'. 5, 1918'.

y| Hg.

i IIN """9 ATTO R N EY as Wide as the interior oi the casing. iit each end the casing; is proii'ided with a Wall or closure S having a slot 9 therethrough ere tending1 diametrically or the end of the casing to the outer Wall et' the casing and to Within about the same distance ot the open tace of the casing. Ordinarily the support 5 is set approximately horizontal, that the casing may rest about level with the Closed tace et the casing constituting; the

upper tace thereof and the open tace lo-v ln order cated at the bottoni ot the casing. that the easing may shed Water and the like, the top wall is made rounded conforming; to the generally cylindrical shape ofthe casing.

Each slot 9 about midway ot its length 1s circularly enlarged, as indicated at 10, s o that the walls ot the enlargement Constr tute a guide and bearing); :tor a rod 11,Wh1ch latter in the event et the enlargements 10 ot the slots 9 being' circular is round in crosssection, and for purposes of manufacture on a cheap scale such formation is to be preferred. This, however, does not preclude making the passages 10 of other than circular shape, and the rod 11 ot a cross-section conforming thereto.

The rod 11 is considerably longer than the casing, so that its ends projectthrough the offset ends of the casing' and extend an appropriate distance beyond such ends.

"Within the Casino' the rod 11 is surrounded by a spring' 12 shown as a helical spring, and as in the operation of the lgate and spring; the latter is subjected to compressive forces, it is not necessary that the spring; be a one piece structure, although it is usually so made, and even it made of tivo or more pieces is effectively a one piece structure.

The spring is ot' such length that to lodge it within the casing it must be compressed to some extent. 'On the rod 11 within the casing are Washers 13 located between the ends `of the spring and the corresponding" ends or heads 8 ot the casing. The slots 9 are quite narrow, and hence the Washers beinground, or at any rate considerably Wider than the Width of the slots, constitute abutnients for the spring. The rod 11 is traversed outside the Washers by pins 1e small enough both in diameter and length to pass easily through. the slots 9, and when the parts are at rest, these pins may be located Within the slots 9.

One end ot the rod 11 is bent at an angle, as shown at 15, and there pivotally receives one end of a link 16, said link beine; held to the rod `by washers 17 and a pin 18 traversing the rod near the free end ot the bent or angle extremity of the rod. This permits pivotal movements of the link 16 on the rod Without chance of the link escapingI from the rod, and also With the link held from turning about a longitudinal axis corren spondingly preventingthe rod from turning;` about its longitudinal airis, since the link aud rod are parallel.

he other end or the link mounted on one leeof a hook 19 formed on one end ot a rod 20. The lee; ot the hook 19 traversing' the link is held thereto by Washers 21 and a pin 22 like the Washers 17 and pin 1S.

The rod 9.0 at the end remote from the hook is suitably screw-threaded and traverses a U clip 23 applied to the bar e to straddle the latter, While nuts 2li applied to the threaded end oi the rod 2O on opposite sides oi the clips Q3 clamp the latter about the bottom bar l and thus firmly hold the rod 2O to the bottom bar in such :manner that the rod 20 will at all times `remain in substantially perpendicular relation to the length or the bottom bar 4r.

The parts are initially adjusted so that 1when the spring 12 is centralized. in the casingl 6 the gate il is in the closed position. lit, new, the gate be swung to one side or the other, the rod 20 will swing correspond-Y ingly and thereby, through the link 1G, moving the rod l11 lengthwise ot the casing.;- 6. llhiehever be the direction of movement of the rod one or the other ot the pins 14 and Washers 13 will cause the. rod to compress the spring, the .other Washer abutting` the opposite head 8 of the casing, thereby preventingthe corresponding end of the spring` from moving, while vthe adjacent pin 1A: travels through the slot 9 and to the exterior of the casing, but always maintaining; its proper relation to the slot 9, so as to move out oi the casing; through the slot, and when the parts are `returned to the central position again entering the slot Without strikingl the Walls thereof.

Because 0i the open bottom ofthe casing `(i the latter is readily and cheaply cast, and

the other parts all being ot' commercial form and obtainable upon the market already manufactured, except for a small amount oi.l work necessary tor assembling, the Whole structure is susceptible of being manufactured at a very low price, so as` to be sold at a correspondingly low price. Furthermore, the `Whole structure is particularly resistant to Weather conditions, While the spring, Whichis more liable to damage than other parts, is thoroughly protected from Weather conditions.

Because of the reliability and low cost oi the structure, it is particularly valuable for use in connection Vwith farm ,trates and the like, Where the reliability of the device and the ,low price at which it may be sold is conducive to the use of the device.

In Fig. 5 there is shown a casing 62L with closed ends 8a, except that the ends have. alined holes 10a for the passage of the rod 11.

16 is pivotally` Two springs 12:L surround the rod 11 and each abnts at one end against a respective one of the ends 8th The adjacent ends ot' the springs l2 engage washers 13'L between which the rod 11 is traversed by a pin 14a. The action of the structure of Fig. 5 is similar to that of the structure of the other `figures of the drawing.

rihis application is a continuation of my application No. 123,750, for automatic spring -for doors and gates, iiled October f1, 1916, in so far as the two applications @over the same snbjeet-matter` l/Vhat is claimed is 1. The combination with a hinged closure, oit' an automatie spring eonstraining-strnctln'e therefor, comprising an elongated casing open along one long side and having closed ends each with a diametrically elongated passage therethrough with an intermediate enlargei'nent constituting a guide and bearing, a rod extending through the easing and through and beyond both ends thereof and traversing' the guiding bearings tormed by the enlargement of the passages in the ends oi the casing, pins traversing the. rod in position to be normally housed in `the passages, washers on those sides oi the pin toward the interior oit the casing, a spring surrounding the rod within the casing and abutting the washers, and connections between one end of the rod exterior to the casing and the hinged closure, said connections being attached to the rod to hold the latter from turning about its longitudinal axis, whereby the pins traversing the rod always maintain the same relation to the passages whether within the latter or moved therefrom.

2. A spring structure for a gate or other closure provided with a bottom rail, comprising an elongated casing having means for fastening it in place, and provided With openings at the ends, a rod extending axially through and beyond both ends of the easing through the openings at the ends thereof, with one end of the rod bent at substantially right angles thereto, spring means on the rod within the casing and eX- tending to both ends thereof, a link traversed at one end by the bent end of the rod, another rod having an end bent at substantially right angles thereto and traversing the other end of the link, with the end of the rod remote from the bent end screw threaded, a clip for aiiixing the second-nalned end oi the rod to the bottom rail of the gate and traversed by the threaded end of the rod, and nuts on the threaded end of the rod for binding the olip to the bottom rail of the Irate. h In testimony, that I claim the foregoing as my own, I have hereto atIiXed my signature in the presence of two witnesses.

FRANK PEZDIR. Witnesses:

NEWTON E. FINN, A. D, Botrsrono.

@epics of this patent may,r be obtained for ve cents each, by addressing the "Commissioner of Patents,

Washington, D. C. 

